package Properity;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Properties;

public class TestMain {
	// 根据key读取value
	public static String readValue(String filePath, String key) {
		Properties props = new Properties();
		try {
			InputStream in = new BufferedInputStream(new FileInputStream(
					filePath));
			props.load(in);
			String value = props.getProperty(key);
			String value2 = props.getProperty("age");
			System.out.println(key + "=" + value);
			System.out.println("age" + "=" + value2);
			return value;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	// 读取properties的全部信息
	public static void readProperties(String filePath) {
		Properties props = new Properties();
		try {
			InputStream in = new BufferedInputStream(new FileInputStream(
					filePath));
			props.load(in);
			Enumeration en = props.propertyNames();
			while (en.hasMoreElements()) {
				String key = (String) en.nextElement();
				String Property = props.getProperty(key);
				System.out.println(key + Property);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	// 写入properties信息
	public static void writeProperties(String filePath, String parameterName,
			String parameterValue) {
		Properties prop = new Properties();
		try {
			InputStream fis = new FileInputStream(filePath);
			// 从输入流中读取属性列表（键和元素对）
			prop.load(fis);
			// 调用 Hashtable 的方法 put。使用 getProperty 方法提供并行性。
			// 强制要求为属性的键和值使用字符串。返回值是 Hashtable 调用 put 的结果。
			OutputStream fos = new FileOutputStream(filePath);
			prop.setProperty(parameterName, parameterValue);
			// 以适合使用 load 方法加载到 Properties 表中的格式，
			// 将此 Properties 表中的属性列表（键和元素对）写入输出流
			prop.store(fos, "Update '" + parameterName + "' value");
		} catch (IOException e) {
			System.err.println("Visit " + filePath + " for updating "
					+ parameterName + " value error");
		}
	}

	public static void writeTest(String pass){
		File file = new File("config.properties");
		if (!file.exists()) {
			try {
				file.createNewFile(); 
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		Properties prop = new Properties();
		OutputStream output = null;
		try {
			output = new FileOutputStream("config.properties");
			// set the properties value
//			prop.setProperty("database", "127.0.0.1");
//			prop.setProperty("dbuser", "gougo");
			prop.setProperty("dbpassword", pass);
			// save properties to project root folder
			prop.store(output, null);
	 
		} catch (IOException io) {
			io.printStackTrace();
		} finally {
			if (output != null) {
				try {
					output.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
	 
		}
	}
	public static void appendLog(String fileName, String content) {
		try {
			content = new String(content.getBytes("GBK"), "ISO-8859-1");
			RandomAccessFile randomFile = new RandomAccessFile(fileName, "rw");
			long fileLength = randomFile.length();
			randomFile.seek(fileLength);
			randomFile.writeBytes(content + "\r\n");
			randomFile.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public  String readTest(){
		String pass = "没有找到";
		Properties prop = new Properties();
    	InputStream input = null;
    	try {
    		String filename = "config.properties";
    		String filename2 = "./src/Properity/config.properties";
    	   input =  new BufferedInputStream(new FileInputStream(filename));
             //   input = TestMain.class.getClassLoader().getResourceAsStream(filename);
    		//input = getClass().getResourceAsStream(filename);
    		if(input==null){
    	            System.out.println("Sorry, unable to find " + filename);
    		    return "null";
    		}
 
    		//load a properties file from class path, inside static method
    		prop.load(input);
                //get the property value and print it out
//                System.out.println(prop.getProperty("database"));
//    	        System.out.println(prop.getProperty("dbuser"));
    	        pass = prop.getProperty("dbpassword");
    	} catch (IOException ex) {
    		ex.printStackTrace();
        } finally{
        	if(input!=null){
        		try {
				input.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
        	}
        }
		return pass;
 
	}
	
	//public static void main(String[] args) {
//		File file = new File("info.properties");
//		if (!file.exists()) {
//			try {
//				file.createNewFile();
//			} catch (IOException e) {
//				e.printStackTrace();
//			}
//		}
//		readValue("info.properties", "url");
//		writeProperties("info.properties", "age", "5555555555555");
//		readProperties("info.properties");
	//}
}